An unknown sample required 21.05ml of 0.02047 m kmno4 to reach the endpoint. how many moles of kmno4 reacted? (m=mol over liter)
a.0.43089 mol
b.0.04309 mol
c.0.004309 mol
d.0.0004309 mol

Apulley with a mechanical advantage of 5 will require you to pull times the amount of rope. a. 1/5 b. 5 c. 10 d. 15

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be